title: The triterpenoid fraction from Trichosanthes dioica root exhibits in vitro antileishmanial effect against Leishmania donovani promastigotes.
abstract: BACKGROUND
  Trichosanthes dioica Roxb. (Cucurbitaceae), called pointed gourd in English is a dioecious climber found wild throughout the plains of the Indian subcontinent and traditionally used in India for several medicinal purposes.
  
  
  OBJECTIVE
  The present study was aimed at the evaluation of in vitro antileishmanial effect of triterpenoid fraction from T. dioica root (CETD).
  
  
  METHODS
  The antileishmanial activity of CETD was evaluated against Leishmania donovani (strain MHOM/IN/83/AG83)) promastigotes by in vitro promastigote cell toxicity assay by using MTT (3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium bromide). Potassium antimonyl tartrate was used as reference.
  
  
  RESULTS
  Here, CETD markedly inhibited the growth of L. donovani promastigotes in vitro in a concentration dependent manner and demonstrated IC50 value of 18.75 μg/ml. The reference drug potassium antimonyl tartrate exhibited IC50 of 7.52 μg/ml.
  
  
  CONCLUSIONS
  From the present study it can be inferred that the triterpenoid fraction of T. dioica root exhibited remarkable antileishmanial activity against Leishmania donovani promastigotes in vitro.
authors.affiliation: Division of Pharmacognosy, Bengal School of Technology (A College of Pharmacy), Hooghly, India.
authors.forename: Sanjib
authors.initials: S
authors.lastname: Bhattacharya
authors.forename: Moulisha
authors.initials: M
authors.lastname: Biswas
authors.forename: Pallab K
authors.initials: PK
authors.lastname: Haldar
keywords: Antileishmanial; Leishmania donovani; Trichosanthes dioica; cucurbitacins; promastigotes; root